The aspell() functions allows you to check the
spelling on a word and offer suggestions.
Замечание:
This extension has been removed from PHP and is no
longer available as of PHP 4.3.0. If you want to use spell-checking
capabilities in PHP, use pspell instead.
It uses pspell library and works with newer versions of aspell.
aspell works only with very old (up to .27.* or so) versions of
aspell library. Neither this module, nor those versions of aspell
library are supported any longer. You need the aspell library, available
from: http://aspell.sourceforge.net/.